content: /*
   *  Licensed to the Apache Software Foundation (ASF) under one or more
   *  contributor license agreements.  See the NOTICE file distributed with
   *  this work for additional information regarding copyright ownership.
   *  The ASF licenses this file to You under the Apache License, Version 2.0
   *  (the "License"); you may not use this file except in compliance with
   *  the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing, software
   *  distributed under the License is distributed on an "AS IS" BASIS,
   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *  See the License for the specific language governing permissions and
   *  limitations under the License.
   */
  
  /**
  * @author Vladimir N. Molotkov
  */
  
  package android.org.apache.harmony.security.asn1;
  
  import java.io.IOException;
  import java.io.UnsupportedEncodingException;
  import java.text.SimpleDateFormat;
  import java.util.TimeZone;
  
  
  /**
   * This class represents ASN.1 UTCTime type
   * 
   * @see http://asn1.elibel.tm.fr/en/standards/index.htm
   */
  public class ASN1UTCTime extends ASN1Time {
  
      /**
       * Length for the pattern: YYMMDDhhmm'Z'
       */
      public static final int UTC_HM = 11;
  
      /**
       * Length for the pattern: YYMMDDhhmmss'Z'
       */
      public static final int UTC_HMS = 13;
  
      /**
       * Length for the pattern: YYMMDDhhmm('+'/'-')hhmm
       */
      public static final int UTC_LOCAL_HM = 15;
  
      /**
       * Length for the pattern: YYMMDDhhmmss('+'/'-')hhmm
       */
      public static final int UTC_LOCAL_HMS = 17;
  
      // default implementation
      private static final ASN1UTCTime ASN1 = new ASN1UTCTime();
  
      /**
       * Constructs ASN.1 UTCTime type
       * 
       * The constructor is provided for inheritance purposes
       * when there is a need to create a custom ASN.1 UTCTime type.
       * To get a default implementation it is recommended to use
       * getInstance() method.
       */
      public ASN1UTCTime() {
          super(TAG_UTCTIME);
      }
  
      /**
       * Returns ASN.1 UTCTime type default implementation
       * 
       * The default implementation works with encoding
       * that is represented as Date object.
       *
       * @return ASN.1 UTCTime type default implementation
       */
      public static ASN1UTCTime getInstance() {
          return ASN1;
      }
  
      //
      //
      // Decode
      //
      //
  
      public Object decode(BerInputStream in) throws IOException {
          in.readUTCTime();
  
          if (in.isVerify) {
              return null;
          }
          return getDecodedObject(in);
      }
  
      //
      //
      // Encode
      //
      //
      public void encodeContent(BerOutputStream out) {
          out.encodeUTCTime();
      }
  
      // FIXME support only one format for encoding, do we need others?
      //
      // According to X.680 coordinated universal time format:
      // two digit year, seconds always presented,
      // no fractional-seconds elements, 'Z' at the end
      private final static String UTC_PATTERN = "yyMMddHHmmss'Z'"; //$NON-NLS-1$
  
      public void setEncodingContent(BerOutputStream out) {
          SimpleDateFormat sdf = new SimpleDateFormat(UTC_PATTERN);
          sdf.setTimeZone(TimeZone.getTimeZone("UTC")); //$NON-NLS-1$
          try {
              out.content = sdf.format(out.content).getBytes("UTF-8"); //$NON-NLS-1$
          } catch (UnsupportedEncodingException e) {
              throw new RuntimeException(e.getMessage());
          }
          out.length = ((byte[]) out.content).length;
      }
  }
  